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2 results

  • 12 - Dune Patterns in Sand Seas and Dune Fields

  • from Part V - Sand Seas and Dune Fields
  • Nicholas Lancaster
  • Book:
    Geomorphology of Desert Dunes
    Published online:
    03 March 2023
    Print publication:
    23 March 2023, pp 226-239

  • Summary

    Most sand seas and dune fields exhibit clear spatial patterns of dune morphological type as well as variations in sediment thickness, dune size, crest length, and spacing. These patterns are the geomorphic expression of the factors that have controlled sand sea development in time and space. They reflect the self-organizing nature of dune systems as well as the external geomorphic and climatic environment (boundary conditions) in which the sand sea has evolved.

  • 9 - Controls of Dune Size and Spacing

  • from Part IV - Boundary Conditions for Dune Formation and Development
  • Nicholas Lancaster
  • Book:
    Geomorphology of Desert Dunes
    Published online:
    03 March 2023
    Print publication:
    23 March 2023, pp 175-185

  • Summary

    Dune height and spacing are commonly closely related. Sand particle size, airflow patterns, atmospheric boundary layer height, sand supply, and dune field geometry have all been suggested as controls on dune size and spacing, as have dune–dune interactions and pattern coarsening as part of self-organization of dune morphologic patterns.